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1.
Development of an Al-Mn-Be-Cu alloy with improved quasicrystalline forming ability
Franc Zupanič, Tonica Bončina, Niko Rozman, Ivan Anžel, Werner Grogger, Christian Gspan, Ferdinand Hofer, Boštjan Markoli, 2008, izvirni znanstveni članek

Opis: An Al94Mn2Be2Cu2 cast alloy was developed displaying increased quasicrystalline formation ability at moderate cooling rates. The as-cast microstructure consisted of a mainly icosahedral phase in the Al-matrix. The microstructure remained stable during uniform heating to 580 °C and isothermalannealing at 400 °C. Most of the icosahedral phase was preserved even after 24 h annealing at 500 °C. For that reason, this alloy presents a promising basis for further development of cast Al-alloys containing quasicrystals.
Ključne besede: alluminium alloys, casting, quasicrystals, TEM, SEM
Objavljeno: 31.05.2012; Ogledov: 1274; Prenosov: 76
URL Povezava na celotno besedilo

2.
Thermal stability of Al-Mn-Be melt-spun ribbons
Gorazd Lojen, Tonica Bončina, Franc Zupanič, 2011, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: icosahedral quasicrystals, aluminium alloys
Objavljeno: 01.06.2012; Ogledov: 956; Prenosov: 45
URL Povezava na celotno besedilo

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The influence of cooling rate on the microstructure of an Al-Mn-Be alloy
Niko Rozman, Tonica Bončina, Ivan Anžel, Franc Zupanič, 2008, izvirni znanstveni članek

Opis: In ternary Al-Mn-Be alloys a metastable quasicrystalline phase can form at relatively low cooling rates (≈ 100 K/s); however, besides the quasicrystalline phase other phases can also be present. We found that the investigated alloy is very prone to the formation of metastable phases, which are also quasicrystalline. Using different investigation methods we determined the type of phases, their shape, morphology, chemical composition and distribution. Special attention was given to the micro- and nano-sized quasicrystalline particles. When using slow cooling, Al10Mn3 and Be4AlMn were present; however, with a faster cooling rate a quasicrystal approximant and a quasicrystalline phase were formed.
Ključne besede: aluminium, quasicrystals, cooling rate, microstructure
Objavljeno: 10.07.2015; Ogledov: 641; Prenosov: 38
.pdf Celotno besedilo (138,43 KB)
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